EnEff:Luft - Energy Efficient Air Conditioning and Ductwork Design for New and Existing Buildings

Duration: 3 years

Start: 08/2014

End: 02/2018

Project partner: Hermann-Rietschel-Institut der Technischen Universität Berlin

Sponsors: BMWi - Bundesministerium für Wirtschaft und Technologie

  BMWi-Logo Copyright: BMWi
  Eneff_Luft_eng-picture Copyright: EBC Proportionate pressure losses of the components of a central air handling unit

The project 'EnEff:Luft' is part of the 6th Energy Research Program of the Federal Government. The main goal of the project is to reduce the amount of energy consumed by air handling systems. Therefore, both the central air handling units as well as the duct system are examined in respect of optimization potential. The central air handling units are examined by the Institute for Energy Efficient Buildings and Indoor Climate at RWTH Aachen and the research of the ductwork system is done by the Hermann-Rietschel-Institute at TU Berlin.

The main focus of the project is the reduction of energy consumption caused by pressure losses of the air handling units (heat exchangers, sound absorber, etc.) and the duct system. The optimization of the duct system is done through a systematic identification of exact pressure loss coefficients of modern duct components both on their own and in different combinations – especially the second option has never been done before.

The findings will be used to develop planning tools for air duct systems with considerably improved accuracy. Furthermore, aerodynamic optimized geometries will be developed to reduce pressure loss in standard ducting parts, control units and other components. The optimization of the central air handling units is done by aerodynamic improvement through harmonized combination of components and functional substitution of single modules. According to preliminary investigations, the possible savings in fan power are around 50 % compared to standard components used today.